Attack, grab, push, or trip,
and cast any blast spell,
in whichever order you prefer.

You can Intensify this spell (unless it is a cantrip).

(Attacking allows you to attack once with a wielded weapon of your choice or once with each dual wielded weapon.)

If you can Double Attack, Heavy Attack, Accurate Attack, or Sneak Attack, you may use one of those abilities instead of attacking with Spellsword.

When an enemy provokes an attack of opportunity from you, instead of attacking with a weapon normally, you may cast a blast spell with a range of 5 ft. which takes an action to cast on that target. This spell only affects that target.